Proposal to expand the scope of the activity to include C2 and C3 tyres.

Updated comments prepared by the secretary based on Japan’s original document.

Proposal to correct some references, which need to be updated as a consequence of document WP.29/2020/70, adopted at the June 2020 WP.29 session, notably

1. Paragraph 5.4.1 renumbered as paragraph 5.5.1.
2. Paragraphs 5.4. and 5.5. respectively renumbered as paragraphs 5.5. and 5.6.

Draft proposal as of 15 January 2021.

Proposal by experts from IWG ASEP for new series of amendments.

Email (.msg format) raising a question on the application of UN R156 to noise requirements under UN R51with regard to possible risk of deviation from limits resulting from a software update.

Proposal to include requirements for wet grip of tyres of classes C2 and C3 in worn state to the scope of the working group activities.

Measurement Uncertainties informal group proposal to clarify the text and to amend:

1. Annex 3, Paragraph 1.4. to delete determination of the vehicle speed by independent speed measuring devices
2. Annex 3, Paragraph 1.5. to clarify that no determination of the wind speed is needed for indoor testing
3. Annex 3, Paragraph 2.1.3. to clarify and differentiate between indoor and outdoor testing
4. Annex 3, Paragraph 2.1.3.1.2. to clarify the temperature range for indoor facilities.
5. Annex 3, Paragraph 2.1.3.2.2. to clarify the temperature range for outdoor facilities.